Dutch,
Lets analyze the fliers a little. Where is the flier going when you're shooting? Is there a consistency to where its going? And how far from the group is it? If the flier keeps going to the same spot every time then what ever is that's causing the flier is consistent too.
I ANSWERED THIS EARLIER. THHERE IS NO CONSISTENTCY IN FLIERS AS TT WOULD REQUIRE EXACT SAME AMOUNT AND LOCATION OF THE AIR BUBBLE OR LIGHT MATERIAL INCLUSION IN EACH BALL SHOT AFTER SHOT..
AIN'T GONNA HAPPEN.
DUTCH